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bio4.30 - Smell Olfaction Detect airborne molecules...

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Smell • Olfaction • Detect airborne molecules • Olfactory receptors • Nasal cavity (chemoreceptor) Taste • Gustation * Detect chemicals dissolved in water/saliva • Taste receptors (chemoreceptor) • Tongue\ • Taste buds -About 10,000 in bumps (papillae) on tongue -Contain taste receptors •Taste receptors -Sweet -Sour -Salty -Bitter -Umami Pain • Detect tissue damage • Pain receptors (chemoreceptors) Conclusions • Neuron structure & function • Action potentials • Peripheral nervous system • Central nervous system • Senses • How is an action potentential conveyed? Animal Reproduction • Asexual reproduction -One parent -Genetically identical offspring via mitosis • Sexual reproduction Asexcual Reproduction •Budding -Parent produces offspring as extension of itself -Sponges, cniderians •Fission -Parent splits into parts that each regenerate a whole organism -Earthworms, flatworms • Parthenogenesis -Haploid egg develops without fertilization -Insects, fish amphibians Sexual Reproduction
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